title: Enzymatic hydrolysis and extraction of arachidonic acid rich lipids from Mortierella alpina.
abstract: A novel method for efficient arachidonic acid rich lipids extraction was investigated. Six different enzymes (papain, pectinase, snailase, neutrase, alcalase and cellulase) were used to extract lipids from Mortierella alpina. The effects of enzyme concentration, temperature and hydrolysis time on oil recovery were evaluated using factorial experimental design and polynomial regression for each enzyme. Hydrolysis time is found to be the most important parameter for all enzymes. The ratios of enzyme mixtures were also studied. It showed that the mixtures of pectinase and papain (5:3, v/v), pectinase and alcalase (5:1, v/v) were better combined effects on oil yields. The effects of hydrolysis time and temperature were then analyzed by response surface methodology, and oil recoveries were satisfactory (104.6% for pectinase and papain and 101.3% for pectinase and alcalase). In the whole process, the lipid composition was not affected by the enzyme treatments according to fatty acid profile.
authors.affiliation: College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, No. 5, Xinmofan Road, Nanjing 210009, People's Republic of China.
authors.forename: Jiang-Ying
authors.initials: JY
authors.lastname: You
authors.forename: Chao
authors.initials: C
authors.lastname: Peng
authors.forename: Xin
authors.initials: X
authors.lastname: Liu
authors.forename: Xiao-Jun
authors.initials: XJ
authors.lastname: Ji
authors.forename: Jinmiao
authors.initials: J
authors.lastname: Lu
authors.forename: Qianqian
authors.initials: Q
authors.lastname: Tong
authors.forename: Ping
authors.initials: P
authors.lastname: Wei
authors.forename: Leilei
authors.initials: L
authors.lastname: Cong
authors.forename: Zhiyong
authors.initials: Z
authors.lastname: Li
authors.forename: He
authors.initials: H
authors.lastname: Huang
mesh_terms: D016718:Arachidonic Acid / Q000737:chemistry*; D018533:Biomass; D004798:Enzymes / Q000378:metabolism*; D008401:Gas Chromatography-Mass Spectrometry; D006868:Hydrolysis; D008055:Lipids / Q000737:chemistry*; D020094:Mortierella / Q000737:chemistry*
chemical_list: D004798:Enzymes; D008055:Lipids; D016718:Arachidonic Acid